1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c0a3ff86808d4a403222c1def9fd2a80a5a22e191baa3209ae7afcc8c6cef0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03477ccc-fd1a-40f1-a840-2e5be43ba214.json and https://artists.proofprofile.net/proofs/artist/03477ccc-fd1a-40f1-a840-2e5be43ba214.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a5c2e4cd269a4f9fcdf80400ae72ba6d6e4e7100b12cb46de13d86d7747b3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRPHQ2309001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a60057113ee2bf1d171304b05642c4bfbfa61430d107ba8054e6f6b4cdec36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRDZ22200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a60057113ee2bf1d171304b05642c4bfbfa61430d107ba8054e6f6b4cdec36. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRDZ22200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d033139c6cf22f1db5a6e3df6a330768619f9f3ce0aaa184c6590d620f26da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2067823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7b8a3b944515c5cc6049154e1838dbb6d6e9a1e2c95f35d129a81a4289acc1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b27aee883149c446b8200fa112f44895dc0cf7100e3228c86ba8c73a3013645. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43e90ea2fbcce23d312f63b54d3a7ffa5b9a90c763f0eea31ca4a5d9a798fa3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11901274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5899e7c6dd3f9b854007078db5c71e04fcccac389e3d7eb634a74049096c9441. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210fae5b752111ade950a4f4fd2a4ee9d09da086d007426efca2fc7b245a2a2b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12013449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940cc79d83924f1951fb8813f58971c990b470d459b6a1b9a89ae722a3afa8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88936324fd6994e9c3008b26fd928c75618dfb5c62d374ba56a913db86e1961. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8895eb1a1b9824f57f55af880df681593b946dd766cb7b9f3e906a93364c85b3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75c84f0a0c88b60d44fdd912a1712b4b076d74e0e4506d186d6f3b26d783f2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eb017e4fd3aa3d7d3baf32b9e52b334681558e0840c2ca3750686cc186d21f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12025114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031822822960a89086c4a0e15035eb495e886ab707443ed34653f47d1c47ca3d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc18a0616f3bbb5d2430392b72a65a6bb667eaaa42a232a066fe7ab3676c83c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc799e9f91ca83c5223fe8928796cb409b28fb106703c4e3e60448451a6fb36b6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17200bd0e7417f069081daa2b8cd70a663236a3060048d1fa9e0def9439a1f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad140a72cca2b1dec04bf63f2dd6bbd7ece7288afe9a0dd54ed83662af44df2f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12024354.